The Models SS and SB series are lightweight, static inverters. These models utilize the latest state of the art, solid state circuitry to invert a 28 VDC input to either a 115 VAC, 60 Hz or 230 VAC, 50 Hz sine wave output. The 60Hz SS Series is certified to FAA TSO-C73 airborne standards.

Design features include a crystal controlled oscillator for output frequency stability and a pulse-width-modulated square to sine wave power conversion scheme for efficient, reliable and quiet operation.